Cool-E | Hard Coat Low-E Glass

Cool-E from Cooling Brothers is a high-performance hard coat Low-E glass, engineered for use in single and double glazing applications. Delivering excellent thermal insulation with robust durability, Cool-E achieves cost-effective performance in residential and commercial projects across all Australian climates.

Hard Coat Low-E

Cool-E improves thermal insulation and reduces energy costs while remaining a cost-effective solution thanks to the Hard Coat Low-E surface.

AS/NZ 4666:2012 certified

All Insulcool double glazed units are certified to AS/NZS 4666:2012, the Australian standard for insulating glass units.

Warm edge spacer technology

InsulCool IGUs feature thermally broken warm edge thermoplastic (TPS) spacer technology sourced from global leaders Quanex and Kommerling.

Cool-E | Hard Coat Low-E Glass

Glass Performance Data

Cool-E
4mm Cool E Clear
83
70
3.65
0.73
0.84
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Cool-E
5mm Cool E Clear
82
68
3.62
0.72
0.82
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Cool-E
6mm Cool E Clear
82
67
3.61
0.7
0.81
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Cool-E
6mm Cool E Neutral
61
43
4.07
0.53
0.61
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Cool-E
6mm Cool E Solar Neutral
44
24
3.99
0.35
0.41
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Cool-E
6mm Cool E Grey
39
36
3.7
0.47
0.54
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Cool-E
8mm Cool E Clear
82
66
3.61
0.7
0.8
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Cool-E
10mm Cool E Clear
79
58
3.59
0.64
0.74
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Cool-E
6.38mm Cool E Clear
82
65
3.6
0.7
0.8
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Cool-E
6.38mm Cool E Neutral
60
40
3.98
0.52
0.6
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Cool-E
10.38mm Cool E Clear
81
61
3.52
0.67
0.77
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Cool-E
10.38mm Cool E Neutral
61
40
3.9
0.52
0.59
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Cool-E
12.38mm Cool E Clear
80
56
3.5
0.63
0.72
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Cool-E
12.38mm Cool E Neutral
59
37
3.88
0.5
0.57
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Cool-E
4mm Cool E Clear / 12mm / 4mm Clear
75
60
1.6
0.66
0.76
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Cool-E
5mm Cool E Clear / 12mm / 5mm Clear
75
57
1.59
0.64
0.74
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Cool-E
6mm Cool E Clear / 12mm / 6mm Clear
74
55
1.58
0.63
0.72
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Cool-E
6mm Cool E Neutral / 12mm / 6mm Clear
55
36
1.84
0.45
0.52
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Cool-E
6mm Cool E Grey / 12mm / 6mm Clear
35
29
1.64
0.39
0.44
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Cool-E
6mm Cool E Solar Neutral / 12mm / 6mm Clear
39
21
1.8
0.28
0.32
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Cool-E
8mm Cool E Clear / 12mm / 8mm Clear
73
53
1.59
0.62
0.71
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Cool-E
10mm Cool E Clear / 12mm / 10mm Clear
70
46
1.58
0.56
0.64
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* For Ultra Pro 61 availability outside NSW and VIC, please contact us on 1300 040 799
Colour is the external panel of glass. Internal panel contains the Low-E coating unless otherwise stated. U Values based on argon filled units unless otherwise stated. All performance values shown represent nominal values. Please refer to our terms and conditions for further details regarding stated performance values of insulated glazing units.

Product Overview

What’s a Rich Text element?

What’s a Rich Text element?

The rich text element allows you to create and format headings, paragraphs, blockquotes, images, and video all in one place instead of having to add and format them individually. Just double-click and easily create content.

The rich text element allows you to create and format headings, paragraphs, blockquotes, images, and video all in one place instead of having to add and format them individually. Just double-click and easily create content.

Static and dynamic content editing

Static and dynamic content editing

A rich text element can be used with static or dynamic content. For static content, just drop it into any page and begin editing. For dynamic content, add a rich text field to any collection and then connect a rich text element to that field in the settings panel. Voila!

A rich text element can be used with static or dynamic content. For static content, just drop it into any page and begin editing. For dynamic content, add a rich text field to any collection and then connect a rich text element to that field in the settings panel. Voila!

How to customize formatting for each rich text

How to customize formatting for each rich text

Headings, paragraphs, blockquotes, figures, images, and figure captions can all be styled after a class is added to the rich text element using the "When inside of" nested selector system.

Headings, paragraphs, blockquotes, figures, images, and figure captions can all be styled after a class is added to the rich text element using the "When inside of" nested selector system.

Technical Information

Glass Thickness (mm):

  • Single Glazed: 4mm – 12.38 (monolithic)
  • Double Glazed: Configurable

Minimum Size:

  • 250x400mm

Maximum Size:

  • 2480x4000mm
  • 2700x4100mm (NSW, VIC Only)

Spacer Thickness:

  • Minimum: 6mm
  • Maximum: 20mm

Configurations:

  • Single Glazed (4–12.38mm)
  • Double Glazed (InsulCool units with 12mm cavity)

Glass Types Available:

  • Cool-E Clear
  • Cool-E Neutral
  • Cool-E Grey
  • Cool-E Solar Neutral

Applications

Commercial & Architectural

  • Glazed Facades and Curtain Walls: Ideal for reducing solar heat gain in large-scale buildings while maintaining visual clarity and daylight access
  • Commercial Windows and Shopfronts: Improves thermal comfort for occupants and helps meet energy efficiency requirements in public and retail spaces
  • Atriums and Skylights: Cool-E maintains high visible light transmission while limiting infrared penetration, helping to control heat buildup
  • Double Glazed IGU Systems: Available as part of certified InsulCool IGUs, suitable for use in thermally broken and performance-rated commercial framing systems
  • Institutional and Educational Projects: Delivers long-term performance with minimal maintenance—ideal for schools, universities, and government buildings.

Residential

  • Energy Efficient Windows and Doors: Enhances insulation in homes, lowering heating and cooling loads and improving energy ratings under NatHERS
  • Multi-Residential Apartments and Townhouses: Balancing affordability and performance, Cool-E is ideal for mid-rise developments looking to boost compliance and comfort
  • Retrofit Glazing Solutions: An effective upgrade option for replacing single-glazed windows to improve thermal performance in existing homes
  • Alfresco and Outdoor Room Enclosures: Reduces radiant heat without obscuring views, making it perfect for glazed entertaining areas and sunrooms

FAQs

Browse some of our most commonly asked questions below. Can't see your answer? Please call us on 1300 040 799 or get in touch via the contact form below.

What is the difference between Hard Coat Low-E and Soft Coat Low-E?

Hard coat (Pyrolytic Coatings) Low-E consists of a single layer vapor deposit applied at high temperatures during the float glass process. Hard coats are ideal for use as a single (monolithic) piece of glass as the coating is highly durable.

Soft coat (Sputter Coats) Low-E coatings are applied in a large magnetron sputter vacuum deposition (MSVD) machine. This allows for a nano-technologically precise coating with multiple layers of metals such as silver, greatly improving performance. Soft coats typically achieve greater solar control, higher visible light transmission (VLT), and lower U Values compared to hard coat Low-E glass. Soft coats can only be used with an IGU as the coating is fragile and easily damaged.

How to I select the right Soft Coat Low-E IGU for my project?

If you know your preferred U Value, SHGC and VLT values you can use our glass selection tool to identify the most appropriate solutions for your project. You can access the tool here.

If you do not yet know your performance objectives, call us on 1300 040 799. Our technical sales team will be able to assist with determining the best solution for your requirements.

Can I specify a custom laminated soft coat Low-E in my IGU?

For projects where safety and performance are paramount, IGUs can be configured with a custom laminated Soft Coat Low-E. Please contact us for details.

Where do you source Low-E glass for InsulCool IGUs?

The soft coat Low E used in our InsulCool range of IGUs is sourced from a range of leading global manufacturers including Guardian, ACG, Saint Gobain, and others.

How to Specify

To provide the most accurate specification for your project, please complete a specification request with your requirements. If you would prefer to speak directly with our technical sales team, please contact us on 1300 040 799, or email info@coolingbros.com.au

Request Low-E Product Information

Please complete the form below with your request. Alternatively, call us on 1300 040 799 or email info@coolingbros.com.au
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AS466 Certified Low-E Double Glazing

All InsulCool Low-E IGUs are manufactured in full compliance with AS 4666 as required under the National Construction Code (NCC). Meeting AS 4666 certification involves rigorous testing across critical criteria, such as accelerated weathering tests to ensure long-term durability. This guarantees the reliability, safety, and efficiency of every IGU we produce.
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